| Biological effect of soil moisture and N fertilization on winter wheat at jointing stage |
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| DOI：10.7606/j.issn.1000-7601.2003.01.08 |
| Key Words: winter wheat soil moisture biological effect N fertilizer |
| Author Name | Affiliation | | WANG Lin-quan | College of Resources ＆Environmental Science,Northwest Sci-Tech University of Agriculture and Forestry ,Yangling,Shaanxi 712100,China；National Laboratory of Soil Erosion and Dryland Farming,Institute of Soil and Water Conversation,CAS,Yangling, Shaanxi,712100,China | | SUN Chun-mei | College of Resources ＆Environmental Science,Northwest Sci-Tech University of Agriculture and Forestry ,Yangling,Shaanxi 712100,China | | XING Wei-qin | College of Resources ＆Environmental Science,Northwest Sci-Tech University of Agriculture and Forestry ,Yangling,Shaanxi 712100,China；Institute of Soil Science,CAS,Nanjing 210008,China | | LI Sheng-xiu | College of Resources ＆Environmental Science,Northwest Sci-Tech University of Agriculture and Forestry ,Yangling,Shaanxi 712100,China | | LI Ya-jun | College of Resources ＆Environmental Science,Northwest Sci-Tech University of Agriculture and Forestry ,Yangling,Shaanxi 712100,China |
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| Abstract: |
| In this experiment，winter wheat was used to study the effects of manners of applying nitrogen fertilizer on photosynthesis，activity of nitrate reductase，morphology of seedlings，biomass yield， grain yield and some other related traits under different water conditions．The results showed that water was the restrictive factor of winter wheat，and it affected all the traits mentioned above by different degrees． The traits of wheat were improved by increasing soil moisture and applying N fertilizer．Under low soil moistare （40％） ，the yield was not raised by increasing N application；Under medium moisture，it was optimal to use two-third of N as basal fertilizer and one-third of it as top dressing at jointing stage． |
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